Recycling and reuse method of radioactively polluted scrap iron and steel produced by pressurized water reactor nuclear power plant

Abstract

The invention relates to the technical field of pressurized water reactor nuclear power plants and discloses a recycling method for radioactively-contaminated scrap iron and steel generated by a pressurized water reactor nuclear power plant. The recycling method comprises the following steps: transporting the radioactively-contaminated scrap iron and steel generated by the pressurized water reactor nuclear power plant to a smelting plant for smelting and decontaminating, and casting molten steel obtained by smelting the radioactively-contaminated scrap iron and steel to form a shielding container; using the shielding container for fixed treatment of a radioactively-contaminated high-dose-rate filter element of a waste water filter for shielding the radioactively-contaminated high-dose-rate filter element of a waste water filter. According to the method provided by the invention, the radioactively-contaminated scrap iron and steel can be recycled for manufacturing the shielding container; the shielding container is used for the subsequent fixed treatment of the radioactively-contaminated high-dose-rate filter element of a waste water filter, replaces heavy metal lead and can be used for shielding the radioactively-contaminated high-dose-rate filter element of a waste water filter, so that radioactive contamination of the filter element to the environment is avoided, better environment friendliness is realized, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of pressurized water reactor nuclear power plants, in particular to a recycling method for radioactively polluted steel produced by the pressurized water reactor nuclear power plant. Background technique [0002] Since Daya Bay / Ling Ao Phase 1 and Phase 2 Nuclear Power Plants were put into operation, scrap steel with slight radioactive contamination on the surface has often been produced during the maintenance activities and equipment transformation activities in the control area. Over the years, scrap steel materials with slight radioactive contamination on the surface have been treated as incompressibles, cut into barrels, and become low- and medium-level radioactive waste packages. [0003] In addition, during the operation of nuclear power plant units, high dose rate wastewater filter elements with radioactive contamination will be produced. The surface dose rate of radioactive contamination of the high ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a recycling method for radioactively polluted iron and steel in pressurized water reactor nuclear power plants, aiming to solve the problem that in the prior art pressurized water reactor nuclear power plants, the processing of radioactively polluted scrap iron and steel increases waste output and high dose rate The treatment of waste filter elements not only increases waste output, but also requires the use of lead skin, which increases operating costs

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